From 5e735440ecd3ca997eb115809be51acdd0984075 Mon Sep 17 00:00:00 2001
From: Sander Schobers <sander@schobers.eu>
Date: Sat, 12 Dec 2020 14:41:14 +0100
Subject: [PATCH] Added scaled ImageSource.

---
 ui/imagesource.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/ui/imagesource.go b/ui/imagesource.go
index adab905..25aae8f 100644
--- a/ui/imagesource.go
+++ b/ui/imagesource.go
@@ -3,6 +3,7 @@ package ui
 import (
 	"image"
 
+	"github.com/nfnt/resize"
 	"opslag.de/schobers/zntg"
 )
 
@@ -45,3 +46,25 @@ func (s ImageSourceResource) CreateImage() (image.Image, error) {
 	}
 	return value.(image.Image), nil
 }
+
+func ImageSourceFromResources(res Resources, name string) ImageSourceResource {
+	return ImageSourceResource{Resources: res, Name: name}
+}
+
+func Scaled(source ImageSource, width, height int) ImageSource {
+	return scaledImageSource{ImageSource: source, width: width, height: height}
+}
+
+type scaledImageSource struct {
+	ImageSource
+
+	width, height int
+}
+
+func (s scaledImageSource) CreateImage() (image.Image, error) {
+	im, err := s.ImageSource.CreateImage()
+	if err != nil {
+		return nil, err
+	}
+	return resize.Resize(uint(s.width), uint(s.height), im, resize.Bicubic), nil
+}